:root {
  color-scheme: light;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #f0f9ff 0%, var(--bg) 55%);
  color: var(--text);
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 0.5px;
}

.brand-by {
  font-weight: 400;
  font-size: 14px;
  color: var(--muted);
}

.brand-logo {
  height: 24px;
  width: auto;
}

.user-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 8px 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  font-size: 14px;
  color: var(--muted);
}

.user-pill form {
  margin: 0;
}

.content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: min(640px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

h1 {
  margin-top: 0;
  font-size: 28px;
}

.muted {
  color: var(--muted);
}

.muted a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s;
}

.muted a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.small {
  font-size: 13px;
}

.info {
  margin: 16px 0;
  padding: 16px;
  background: #f1f5f9;
  border-radius: 12px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.mock-form {
  display: grid;
  gap: 12px;
  margin: 20px 0 10px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8fafc;
}

.signer-form {
  display: grid;
  gap: 16px;
  margin: 16px 0;
}

.signer-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.signer-list {
  margin-top: 12px;
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.status-row {
  align-items: center;
  grid-template-columns: 1fr auto;
}

.alert {
  margin: 12px 0;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
}

.alert.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert.success {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.decline-form {
  margin-top: 12px;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

.field input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
}

.btn {
  border: 1px solid var(--border);
  background: white;
  color: var(--text);
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.btn:active {
  transform: scale(0.98);
}

.btn.primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn.primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn.primary:disabled,
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.btn.primary:disabled:hover,
.btn:disabled:hover {
  transform: none;
}

.btn.ghost {
  background: transparent;
}

.btn.ghost:hover {
  background: #f1f5f9;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.method {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 16px;
  background: #f8fafc;
}

.footer {
  padding: 16px 32px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 600px) {
  .header {
    padding: 16px;
  }

  .card {
    padding: 24px;
  }
}